Improvement in permutation-locks



LM'EYER..

PERMUTATIoN Loca.

' Patented 091.214.1876.

N. PETERS. PHOTO-LITHOGRAFHEE. JNASHINGTON. D C,

' STATES .Par 'r JOHN MEYER, OF COVINGTON, KENTUCKY.

IMPROVEMENT IN PERMUTATION-LOCKS.

Specication forming part of Letters Patent No. 183,504, dated October 24, 1.876; application filed November 24, 1875.

To all whom it may concern: Y Be it known that I, `JOHN MEYER, of Covlngton, in the county of Kenton and State of Kentucky, have invented a new and useful .Improvement in Permutation Locks, which im provemcnt is fully set forth in the following specification, reference being had to the accompanying drawings.

The object of this invention is to disconnect .the tumblers of a combination-lock from the spindle by which they are operated, so as to relieve them from all strain,'and prevent the possibility of feeling for the slots.l

The invention consists in providing a secondary lock, to be operatedl by a key, or the common dial-knob, to act upon a slide in the driving-wheel of the main lock, for the purpose of coupling or uncoupling the spindle and tumblers of the main lock, and in the peculiar construction of the driving-wheel which adapts it to this use.

.In the annexed drawing, Figure 1 is a plan view of the lock, the back of the plate and cap that covers the secondary lock being removed. Fig. 2 is a horizontal section taken through the center of the spindle, and'looking toward the top of the lock. Fig. 3 is a plan view of one of the tumblers. Fig. 4 is an axial section of the same. Fig. 5 is a similar view to Fig. 2, and shows the mode of constructing the lock when the secondary lock is a combination-lock instead of a key-lock.

A is the outer case 5 B, the bolt, and D the dog, pivoted to the bolt andcontrolled by the tumblers of the main lock, a stud, being formed on or secured to the case to prevent endwise movementof the dog D, except by the tumblers. L L refer to the tumblers ot' the main lock, mounted to turn loosely on a stationary collar on the spindle F thereof.

Each tumbler consists of an outer ring, d, and

an inner ring, e. The inner ring is notched turned, the inner ring lifted out and shifted, so that the pin l will enter the notch opposite the desired letter.

These tumblers L of the main lock are operated through the medium of the drivingwheel M, composed, primarily, of an outer ring, m, and a disk, m', notched around itsV periphery. The disk m is keyed to the spindle F of the main lock. vA cap, le, is secured on the upper surface of the ring m, holding the disk m in position. This cap is slotted to receive the slide o, having two pins, V V, which project through a slot in the ring m of the driving-wheel. The pin V is engaged between the projections i c" of the bolt I of the4 secondary lock. That portion of the slide o which enters the slot in the ring m is adapted also to enterV any one ofthe notches in the disk m', for the purpose of coupling the ring m to said disk, which is accomplished by the proper movement of the bolt I of the secondary lock. When the slide o has thus coupled the ring m to the disk m' ofthe driving-wheel, its pin V will be in position to act upon the upwardlyprojecting stud on the next adjacent tumbler L ot' the main lock, so that all the tumblers L may then be set by the driving-wheel by properly manipulating or turning the main spinlock. The purpose of this catch, which is pressed dow-n by a spring, P, is to lock the slide o in either position.

The secondary lock (illustrated in Figs. 1 and 2) is a key-lock, composed of a series of lever-tumblers, P, tted to turn upon a pin projecting from the standard a above the bolt I, and inclosed in a suitable case within the` main-lock case, so as to guard the action of the key on the bolt I. These tumblers are set, in the usual way, by a key passing into the lock through a slot or key-hole in the spindle E, to permit the key to shoot the bolt I, for the purpose of coupling or uncoupling the ring m and disk m' of the driving-Wheel by the slide o. The outer lever-tumbler I of lthe secondary lock is elongated, to pass `out oi' its case under the pin b', for the purpose of lifting it when the bolt I is to be moved. The outer end of this lever-tumbler P is held, by a spring, down onto the beveled projection t of the `bolt I, so that in movingsaid tumbler by the key it will ride up on the projection, and thus lift the pivoted catch, as described. The spindle E may be protected by a stud, s,lsecured to the back plate of the case. The key-hole of this secondary lock is guarded by a plate, f, actuated by a spring, the tendency of which is to withdraw it, so as to expose the key-hole for the introduction of the key. This guard is pushed across the key-hole by the beveled end of the slide g, which is controlled by a lever, G, which is pivoted to the case at a', and has a dog at the other end, resting on the tumblers N on the spindle F of the main lock. These tumblers are constructed, preferably, like the tumblers L; but one of them is fixed on the spindle F, so that by it the other may be set, if two only are used, as shown in this instance. The tnrnblers L and the tumblers N are separated by a bridge-plate, 1t, supported on standards n. When the dog of lever C rests on the periphery' of tumblersN the springguard f will be held across the key-hole of the secondary lock; but when the dog drops into the notches of these tumblers N, the guard will be drawn back by its spring to expose the key-hole. The secondary lock (shown in Fig. 5) is a combination-lock. In this case the bolt I thereof is operated.v by a dog, C', pivoted to the bolt, and adapted to engage the notches in the tumblers. The bolt I is supported and slides on the bridge-plate covering the tumblers. The catch b, for locking the slide o, will be lifted, in this case, by the beveled projection i on bolt I.

The arrangement of the tumblers and their washers or collars upon the arbors of the main lock l and the,f secondary lock (when a combination-lock) and the construction of the arbors are the same as in combination-locks of this class now in use.-

When the tumblers N are used for controlling the keyhole guardof the secondary lock, the driving-tumbler thereof andthe drivingwheel of the main-lock tumblers must be set to the sarne letter, so that when the key-hole of the secondary lock is exposed the slide o will be in line With the studs i and t" upon the bolt I of the secondary lock.

lt is evident that the driving-Wheel oi' the main lock may be either above or below the other tumblers thereof; but, as the combination of the driven tumblers is governed by the driving-tumbler, it is `necessary that the disk m of the latter should be brought to the proper position before the bolt I of the secondary lock is movedV `for either coupling or uncoupling the tumblers, in order to avoid changing the combination in the one case, and to secure the action of the projections of bolt I upon the slide o in the other.

What I claim as my invention, anddesire to secure by Letters Patent, is-

1. The bolt I of the secondary lock,` having4 the projections 'i i t", in combination with the driving-wheel of the main lock, provided with the slide o, having pins V V', whereby the driving-Wheel is connected with, and disconnected from, the tumblers of the main lock, substantially as described.

2. The driving-wheel composed of an inner disk, m', and an outer ring, m, in combination with cap 7c, catch b, and slide o, with its pins V and V', the parts being constructed to opcrate substantially as specified.

JOHN MEYER. Witnessesz GEo. J. MURRAY, J AMES MOORE. 

